The figure of the composer was standing next to a figure of conductor Herbert von Karajan on the fourth floor of a multimedia museum called Next to Mozart.
The head's value has been estimated at $18,427, although museum employees said the work was unique.
They join the previously-announced Jessie Mueller, Norm Lewis, and more in the one-night presentation March 30.
The season will include appearances by Joshua Bell, Hilary Hahn, Yo-Yo Ma, and more.
The dance company led by Broadway choreographer Chase Brock will play a strictly limited engagement at A.R.T./New York Theatres.
Yuval Sharon's new production, starring Lise Davidsen and Michael Spyres, opened March 9.
Find out what’s happening in the opera, concert, and dance scene this week.
